I never get bothered by the “shiny employees” leaving. Excellence always speaks for itself. We’ve tried this many times with guys like Mark Papermaster, Chris Lattner leaving Apple and flaming out at Google in a blaze of glory. Some would say John Gianndrea is approaching Papermaster levels of futility at Apple.
I get Corporate culture and the obstacles but when you come in as a high profile hire you basically get what need and 4 years later if you haven’t delivered it’s time to move on. Meta is paying millions a year and i’m pretty sure Apple was like “bye”